It looks like the Nikon naming convention for Z cameras is different from the F mount DSLRs:
- Single digit for FX models (Z5, Z6 .. Z9), and double digit for DX (Z50)
- higher number represents higher-spec (more professional) model, with Z9 being at the top. This is different from the F cameras where single-digit models (lowest number) were the pro cameras.
- to represent a new generation, the base model number stays the same with suffix added (Z6 -> Z6II). How will that be continued into the future - will we have Z6III, Z6.4, Z6.5 ?
